HydraMaster CTS 403 Flex, Owner'S Manual

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4-7: Machine Maintenance
Plunger Maintenance
1. Remove the manifold as previously described. Remove the packing retainers if they
remain on the pistons after removing the manifold.
2. Remove the nut and washer on the end of the piston using a 13-mm wrench or
socket.
3. Slide the ceramic plunger and the remaining washer from the piston guide. Inspect
the ceramic piston, O-ring and washers for wear. Replace if necessary.
Plunger Re-assembly
1. Generously grease the piston guide. Replace the O-ring making sure it does not
twist or roll.
2. Slide the lower washer and ceramic bushing onto the piston guide.
3. Place a small amount of LOCTITE 243™ on the piston guide threads. Replace the
old washer and thread the nut onto the piston guide. Torque to 4.5 ft-lbs.
Servicing the Crankcase
1. While the manifold and plungers are removed, rotate the crankshaft by hand. Closely
examine the crankcase oil seals for drying, cracking or leaking.
2. Consult the local HydraMaster distributor if crankcase servicing is necessary.